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Evaluate the elements in period 4 to show how the physical state changes as the atomic number increases?
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∙ 11y ago
metal --> metalloid --> nonmetal. At room temperature the physical state is solid for the metals and metalloids. Bromine (group 17) is a liquid, krypton, group 18, is a gas
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∙ 11y ago
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Sienna Hendrix
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∙ 12y agoThe highest and leftmost entry in a Periodic Table, hydrogen, has an atomic number of one. Every subsequent entry that has a predecessor in the same period has an atomic number that is one more than the atomic number of its immediately left predecessor, and every entry that begins a new period has an atomic number one greater than the rightmost entry in the preceding period. In order to apply this rule properly, all the lanthanide elements must be considered part of sixth period and all of the actinide elements must be considered part of the seventh period, even though the lanthanide and actinide element are usually printed in separate rows at the bottom of the actual periods.
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∙ 6y agoThe last members are bromine (liquid) and krypton (gas).
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∙ 12y agoNo one seems to know, great.
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When elements form bonds it changes what?
chemical & physical properties
Elements and compounds cannot be broken down into simpler substances by an ordinary what?
Elements and compounds (pure substances) cannot be broken down by physical changes.
Why changes of stat are physical changes?
The changes of stat are physical changes because the stat is similar to the physical changes.
Which is not a physical change associated with aging?
a physical change is not a chemical change as it changes the physical appearance of the substance like state, color, size and shape
Are state changes physical or chemical changes?
A change of state: Solid <-> Liquid <-> Gas A change of state is a physical change.
What physical changes occur to thermal conductivity?
because atoms expands when temperature increases in result physical changes.
How do elements changes as you across the periodic table?
the number of protons increases
When elements form bonds it changes what?
chemical & physical properties
What is the physical changes that can occur when the number of cells in an organisms increases?
gfngdgf hjdfgj d
Do elements go through physical changes?
yes radioactive decay and particle absorption
Physical changes that can occur when the number of cells in an organism increases?
let us be 1 with the force Nathan of bromsgrove
Elements and compounds cannot be broken down into simpler substances by an ordinary what?
Elements and compounds (pure substances) cannot be broken down by physical changes.
How the thermal energy of an object changes when the objects temperature changes?
when abody is heated definitely its thermal energy increases so far that it can even cause a change in its physical appearance
How else are nuclear reactions unlike chemical reactions?
In nuclear reactions the atom itself changes while molecules and/or structural organisation of atoms do in chemical and physical changes.
Why changes of stat are physical changes?
The changes of stat are physical changes because the stat is similar to the physical changes.
What happens when you heat sulfur and copper together?
It changes into a compound. You start with two elements and then when you heat them it changes to a compound. A compound is something that has new chemical and physical properties
Is stretchability a physical or chemical property?
It's so physical ! Because is a property indepedent of chemical changes.
